Improved compound for manufacture of faints



academia 33mm wi anosnqeounnn, OF FORT SCOTT, KANSAS.

Letters Patent No. 105,634, dated July 26, 1870; antedatediune 9, 1870.

The Schedule referred to in these Letters Patent and making part I01 thesame 10 all whom it may concern.-

Be it known that I, AMOS H. BOURNE, of Fort Scott, inth'e county ofBourbon and State of Kansas, have invented a new and improved Umber Comepound; and I do hereby declare that the following is a full, clear, andexact description thereof, which will enable others skilled in the artto make and use the same. V

This invention relates to a new compound of earths and minerals, to behereinafter described, for making umber for use in painting. l

These substances have never been designated by anyparticnlar name, andhear so close resemblance to the common earths as to have escaped noticeas being of special value untildiscovered by me.

For convenience I have, however, designated as No. 2 the inside contentsof the hollow bowlders found in the coal banks; as No. 3, a red earth;as No. 4, the yellowish-brown earth found in pockets in the coal banks;and as No. 5, the exterior or shells of the bowlders above mentioned.

Nos. 2, 4, and 5, are found in southern Kansas and western Missouri, andNo.3 near Fort Scott, Kansas.

To form the compound for umber,1I mix and grind together the above-namedingredients, in about the following proportions:

Seventy-five parts No. 3, eight and one-third parts No.2, eight andone-third parts No. 4, eight and onethird parts No. 5, which produce,when so mixed and compounded, an article of umber serving as anexcellent substitute for the umber of commerce now in use, and which maybe produced inuch cheaper;

It may be used in the raw'state or burned in the usual way.

To make a lighter 'or darker shade, I change the proportions of theseveral parts according fto. their colors, as required. a

The said compound is mixed with oils for painting in the same way thatthe umber of commerce is mixed;

Having thus described my invention,

I claim as new and desire to secure by Letters latent- The improvedcompound of the earths or minerals hereinldescribed, in the' proportionsand manner substantially as specified.

A. H, BOURKE.

Witnesses G. F. DRAKE, Geo. W. MADISON.

